Abstract: A method for a structure having a countersunk fastener head includes forcing an aliphatic urethane surfacer into a void around the fastener head.

Abstract: A patch for reworking an inconsistent area in a composite structure includes a composite laminate patch adapted to cover the inconsistent area and bonded to the structure by a layer of adhesive. The patch includes a plurality of composite plies having a tapered cross section, and at least first and second regions respectively having differing fracture toughnesses.

Abstract: Polyurethane coating compositions comprising a mixture of aromatic and aliphatic isocyanate, and a mixture of polyol resin are disclosed. Methods for treating an aged substrate are also disclosed.

Abstract: A composite laminate patch for reworking an inconsistent area in a structure has inner and outer control regions possessing differing interlaminar fracture toughnesses for controlling the advance of a disbond in the patch. One or more separation zones in the patch between the control regions aids in diffusing the fracture energy of the disbond as the disband advances from the inner region to the outer region.

Abstract: This invention is a method and apparatus for repairing a hole in a surface with a perforated repair patch. The repair patch, which is affixed to and substantially cover over the hole, is indented inwards by applying cement compound into its perforations and pushing the repair patch into the hole as the cement compound hardens. A layer of drywall compound is then applied over the indented repair patch to smooth it with the rest of the wall. The perforated repair patch may include an additional layer of mesh sheet material to minimize cracking of the drywall compound.

Abstract: A method for fabricating a repair laminate for a composite part having an exposed surface includes applying a release film to the exposed surface and forming an uncured ply stack assembly on the release film. The uncured ply stack assembly is formed by forming and compacting a series of uncured ply stacks. The release film and ply stack assembly is then removed from the exposed surface. A bonding material is then applied to the exposed surface, and the uncured ply stack assembly is applied to the bonding material. The ply stack assembly and bonding material are then cured.

Abstract: A patch for reworking an inconsistent area in a composite structure includes a composite laminate patch and a layer of adhesive for bonding the laminate patch to the composite structure. The laminate patch has at least first and second regions for releasing strain energy around the inconsistent area respectively at different rates.

Abstract: A patch for reworking an inconsistent area of a composite structure comprises a composite laminate patch and a bond joint between the patch and the structure. The bond joint including at least first and second regions respectively having differing properties for releasing strain energy around the inconsistent area at different rates.

Abstract: A drywall patch is coated with a premeasured amount of joint compound in its wet state making it immediately available for application to a wall surface. The patch with compound is sealed in an airtight wrapper or between unsealed wrapper halves which are in turn sealed in a surrounding airtight package so that the joint compound stays moist and will not harden over time. The wrapper includes a peel-away adhesive dry patch. In use, the dry patch is first applied over a crack or hole to be repaired. The wrapper and compound are applied directly over the dry patch and, while the wrapper remains in place, pressure is applied to smooth the compound over the patch and removed after the compound has dried. The wrapper is preferably composed of microporous breathable plastic film.

Abstract: A molded carbon-fiber-reinforced plastic (molded CFRP) includes a plurality of carbon fiber layers having carbon fibers, a resin body in which the carbon fiber layers are buried, and pins which are inserted and fixed in a plurality of holes formed in the resin body so as to extend through the carbon fiber layers. In the molded CFRP, the pins can be inserted and fixed in the plurality of holes formed in the resin body so as to extend through the carbon fiber layers, to thereby improve interlaminar toughness of the molded CFRP.

Abstract: A repaired composite material component 24 comprises parent composite material 12, a primary region 14 of replacement composite material and a secondary region 26 of replacement composite material which has a greater tendency to debond under loading of the repaired composite material component 24 than the primary region 14.

Abstract: A method for reworking an electrically conductive layer of a composite skin is disclosed in which a patch replaces the altered section of the electrically conductive layer. The method is performed by removing a portion of the electrically conductive layer to reveal the underlying composite skin. A patch is formed, having an electrically conductive section coupled to an adhesive having a low dielectric breakdown strength, and is then introduced over the underlying composite skin such that the adhesive layer covers the underlying composite skin and overlaps an unremoved portion of the electrically conductive layer. The patch is applied such that the electrically conductive section within the patch covers the adhesive layer and overlaps the unremoved section of the electrically conductive layer. The adhesive layer preferably has a low dielectric breakdown strength, so that electricity from lightning which strikes the composite skin may be conducted through the adhesive.

Abstract: A method for reworking an electrically conductive layer of a composite skin is disclosed in which a patch replaces the altered section of the electrically conductive layer. The method is performed by removing a portion of the electrically conductive layer to reveal the underlying composite skin. A patch is formed, having an electrically conductive section coupled to an adhesive having a low dielectric breakdown strength, and is then introduced over the underlying composite skin such that the adhesive layer covers the underlying composite skin and overlaps an unremoved portion of the electrically conductive layer. The patch is applied such that the electrically conductive section within the patch covers the adhesive layer and overlaps the unremoved section of the electrically conductive layer. The adhesive layer preferably has a low dielectric breakdown strength, so that electricity from lightning which strikes the composite skin may be conducted through the adhesive.

Abstract: A polyurea adhesive composition that is obtainable by reaction of reaction components that include a polyisocyanate comprising isocyanurate rings, the polyisocyanate having a functionality equal to or greater than 3, a polyamine having an average molecular weight greater than about 500 dalton and a carboxylic acid. Additionally, the reaction components may comprise an aromatic diamine chain extender. The molar ratio of the isocyanate groups to whole amine and carboxylic acid functions of the reaction components is between 1.5 and 3.5. Further provided is an article comprising a component bonded to the article with the polyurea adhesive described above. The bonded faces between the component and the article may be of cross-linked rubber composition. The article may be, for example, a tire, a tread band and/or a patch applied to the tire.

Abstract: A plug finishing system involves forming a counterbore in a cover board above the head of a fastener as it is driven by a specially constructed driver. A plug, which is dimensioned for the counterbore and has a reduced portion, is inserted into the counterbore and positioned so that its exterior surface is co-planar with the exterior surface of the cover board.

Abstract: A method for manufacturing a ceramic substrate, and a ceramic substrate using the same are disclosed. The method for manufacturing a ceramic substrate includes: forming a first adhesive layer on a blister formed on a substrate; filling the blister having the first adhesive layer formed thereon with a filler; and hardening the ceramic substrate. A blister formed on the ceramic substrate can be removed to make the substrate have a smooth surface, thus improving reliability.

Abstract: The present invention relates to new cure accelerator systems for anaerobic curable compositions. These anaerobic cure systems include tetraalkyl ammonium oxidizing salts that are soluble in the (meth)acrylate component of the composition.

Abstract: A drywall patch is coated with a premeasured amount of joint compound in its wet state making it immediately available for application to a wall surface. The patch with compound is sealed in an airtight wrapper or between unsealed wrapper halves which are in turn sealed in a surrounding airtight package so that the joint compound stays moist and will not harden over time. The wrapper includes a peel-away adhesive dry patch. In use, the dry patch is first applied over a crack or hole to be repaired. The wrapper and compound are applied directly over the dry patch and, while the wrapper remains in place, pressure is applied to smooth the compound over the patch and removed after the compound has dried. The wrapper is preferably composed of microporous breathable plastic film.

Abstract: A drywall repair patch is disclosed. It includes a coated sheet attached to an adhesively coated porous substrate, which includes a porous sheet and a layer of dry, water-hardenable cement product carried on at least one side of said porous sheet. The repair patch is free of any rigid supporting plate.

Abstract: A technology for remedying a defect in a glass substrate which constitutes a display panel. There is provided a method of remedying a defect in a glass substrate which constitutes a display panel, which method includes performing grinding of glass material, until reaching internal bubble (1b) from surface (1s) of glass substrate (1), with respect to a region where the internal bubble (1b) occurring within the glass substrate (1) is positioned and further also grinding off a glass material position surrounding the internal bubble (1b).

Abstract: A road and repair system and/or method using one or more components including a plurality of magnetite concentrate particles, at least one acidic activator including phosphate anions, and a plurality of reactive aggregate particles including iron.

Abstract: A glass pane (1) has an inner side (6) and an outer side (5) and a detector (10) located on the inner side (6) for electromagnetic radiation which, coming from the outer side (5), passes through the glass pane (1) and can be detected by means of the detector. The glass pane (1) is a composite pane, in particular a glass pane of composite safety glass of a motor vehicle, with an inner pane (3) and an outer pane (2), which are joined to each other with the aid of a film (4) arranged between the inner pane (3) and the outer pane (2). In order also to obtain a sufficient intensity of the electromagnetic radiation passing through the glass pane (1) and detectable by the detector (10) in glass panes with a small transmission coefficient, it is proposed that the beam path of the electromagnetic radiation leading to the detector (10) penetrate only the material of the outer pane (2) and pass through the plane of the inner pane (3) in the region of a continuous hole (7).

Abstract: A sheet including a coextruded medium made from at least one polymer material, including a core layer and at least one skin layer, the core layer including voids, the sheet having intaglio printing performed thereon.

Abstract: A beaded composite panel is fabricated using composite plies. An opening is formed in each of plies, and each ply is laid up on a bead feature and drawn down over the bead feature in the area of the opening so as to widen the opening into a gap allowing the ply to conform to the contour of the bead feature. Patches are fabricated and placed on the plies overlying over the openings. The laid-up plies are compacted and cured.

Abstract: A patch for reworking an inconsistent area of a composite structure comprises a composite laminate patch and a bond joint between the patch and the structure. The bond joint including at least first and second regions respectively having differing properties for releasing strain energy around the inconsistent area at different rates.

Abstract: According to a method of the present invention for remedying a defect of a glass substrate, abrasive grains (12a) made of alumina are jetted toward a protrusion (1p) which is located in a portion where an internal bubble (1b) is formed in a glass substrate (1) so that a glass material in a region including the internal bubble (1b) is removed. Thus, it is possible to completely remedy the internal bubble (1b) of the glass substrate (1) without damaging the glass substrate (1).

Abstract: A novel method for refurbishing a rubber disc used in a recycle machine comprises the steps of cleaning and sanding the surface of the disc; priming at least the surface of the disc with a liquid primer or interfacing agent (adhesive); placing the disc in a portion of a mold; charging or filling the mold with a polymer (synthetic rubber or elastomer) mixed with a suitable catalyst, hardener or activator; allowing the synthetic rubber polymer to exothermally cure inside the mold; and withdrawing the disc from the mold. The resulting refurbished disc is characterized by a new outer surface layer (synthetic rubber) adhered to the original rubber disc. In an alternatively preferred method, one or more relatively small holes are formed in the surface of the disc prior to molding the new outer surface layer on the disc whereupon the strength of the bond between the new outer layer and the original disc is enhanced.

Abstract: A doubler assembly repairs at least one damaged aperture of a composite flange. The doubler assembly includes an insert, an adhesive, and a support. The insert is positioned in the damaged aperture to provide compressive load transfer through the composite flange. The adhesive is positioned directly on at least a portion of the composite flange proximate the damaged aperture. The support is positioned over the adhesive.

Abstract: A patch for repairing damaged structures is disclosed herein. The patch includes a plurality of structural fibers. The patch also includes a quantity of binder at least partially encapsulating the plurality of structural fibers. The patch also includes a plurality of carbon nanotubes substantially encapsulated in the binder with the plurality of structural fibers. An inventive and exemplary method for using the patch is also disclosed.

Abstract: A method of producing a substantially parallelepiped vacuum panel which has, in an outwardly gas-tight manner in a sleeve or envelope, a filling made of granular or powdered degassed support elements, preferably silica particles, the interior of the sleeve being evacuated and the support elements being moved closely together and being enclosed by the sleeve, the sleeve comprising an encapsulation by injection-molding or overmolding of a plastic material. For forming two sides of the sleeve remote from one another, metal plates are provided, between which the support elements are arranged. The peripheral rims of the metal plates are positively and non-positively embedded by the encapsulation by injection-molding and/or overmolding. Additionally, a permeation barrier layer may be provided on at least the encapsulation by injection-molding and/or overmolding. Moreover, getter materials may be provided between the support elements.

Abstract: A flame retardant patch for repairing a tear or hole in clothing or gear includes a flame resistant fabric and a pressure sensitive adhesive bonded to the fabric by hot melt lamination. The pressure sensitive adhesive contains halogenated flame retardant compounds. A release paper covers the pressure sensitive adhesive and is removed to allow application of the flame retardant patch to the clothing or other item being repaired. The patch is attached by applying pressure to the top fabric surface of the patch for approximately 45 seconds using the convex surface of a spoon-like object. The patch is contained in a flexible moisture resistant enclosure formed of a thermoplastic urethane composition.

Abstract: A polyurea adhesive composition that is obtainable by reaction of reaction components that include a polyisocyanate comprising isocyanurate rings, the polyisocyanate having a functionality equal to or greater than 3, a polyamine having an average molecular weight greater than about 500 dalton and a carboxylic acid. Additionally, the reaction components may comprise an aromatic diamine chain extender. The molar ratio of the isocyanate groups to whole amine and carboxylic acid functions of the reaction components is between 1.5 and 3.5. Further provided is an article comprising a component bonded to the article with the polyurea adhesive described above. The bonded faces between the component and the article may be of cross-linked rubber composition. The article may be, for example, a tire, a tread band and/or a patch applied to the tire.

Abstract: This invention provides a method for restoring at least one means defining a railroad spike hole located in a used railroad tie. In this way, the restored railroad tie can be reused in subsequent rail replacement operations. The restored railroad tie is capable of having a railroad spike penetrate and be retained within the confines of the restored railroad spike hole without substantial bending problems. The used railroad tie provided has at least one spike hole located therein. In each the means defining a railroad spike hole is formed a polymeric plug. The polymeric plug comprises a polymeric plug formed of a polymeric material including a plurality of flexible, readily deformable micro-inclusions which allow the formation of spike insertion pathways that track the insertion forces of the railroad spike as it is driven into a material thereby facilitating introduction of the railroad spike into said polymeric plug.

Abstract: Systems and methods for providing a structural adhesive film that includes a conductive scrim layer are disclosed. In one embodiment, a method for producing a structural adhesive film includes providing a first resin adhesive layer. The first resin adhesive layer is configured to bind to a first carbon fiber ply. The method also includes providing a second resin adhesive layer. The second adhesive layer is configured to bind to a second carbon fiber ply. The method also includes providing a conductive scrim that is embedded between the first resin adhesive layer and the second resin adhesive layer. In some embodiments, the conductive scrim is infused with resin adhesive.

Abstract: A structure-aided method for sealing, from the outside, a liquid-leaking puncture wound in the wall of a liquid container. This method is implemented utilizing a patch body having a perimetered cavity selectively securable to the outside of such a container with the cavity overlying and facing the wound, and the cavity's perimeter surrounding the wound, and a patch pellet confined in the cavity, and possessing a liquid-reaction substance which, with the patch body secured to the container, reacts to contact with liquid leaking from the container at least by imbibing such liquid and swelling to apply wound-sealing pressure, and more preferably by additionally reacting with leakage liquid to form a sticky coagulant mass for aiding in applying sealing pressure to the wound. The patch body may be employed directly on the outside of a container, or with an intermediate, resilient gasket which centralizes the symmetrical introduction of leakage liquid into the pellet-containing cavity.

Abstract: An assembly includes a composite flange, an insert, an adhesive and a support. The composite flange has at least one damaged aperture. The insert is positioned in the damaged aperture and extends therefrom to provide compressive load transfer through the composite flange. The adhesive is positioned directly on at least a portion of the composite flange proximate the damaged aperture. The support is positioned over the adhesive and contacts the insert.

Abstract: A device for repairing a structural component (305) having a first member (401) adapted for bonding to a structural component (305).

Abstract: A reusable, air-permeable packaging film formed of a layer of resilient and nontoxic material is disclosed. The packaging film includes a plurality of micro-gaps distributed within a pre-selected area on the packaging film, wherein each of the micro-gaps traverses thickness of the packaging film, and wherein, in a static state, i.e., no pressure/stress exerted on the packaging film, each of the micro-gaps comprises a split upper seam portion with edge ridges demonstrated on a top surface of the packaging film and a close lower seam portion communicating with the split upper seam portion. During microwaving, the pressure can be regulated at a relatively lower vapor transferring rate through the pre-selected area.

Abstract: A car mat module includes a floor carpet with at least one depression, and at least one car mat configured and dimensioned to be seated into the depression. The thickness of the depression may be substantially equal to the thickness of the car mat. The depression may include at least one slot and the car mat may include at least one protrusion configured and dimensioned to be inserted into the slot. At least one hook may be provided on the car mat or the floor carpet, configured to secure the floor mat and the carpet together. The at least one slot may be two slots disposed along opposite edges of the depression. Each protrusion may be a plurality of co-linear protrusions disposed along a single edge of the car mat, and each slot may be a plurality of co-linear slots disposed along a single edge of the depression.

Abstract: Various solutions for repairing and reinforcing containers are disclosed. Embodiments of the present invention provide patches or reinforcing members which may be conveniently and effectively adhered to a container to improve the structural integrity thereof, protect the contents of the container, and provide an aesthetically-pleasing repair/reinforcement of the container. A substantially-planar patch may be used to repair or reinforce a surface of a container, while patches for adhering to multiple surfaces of the container may be used to repair or reinforce edges or corners. The thickness of the patch may be substantially less than that of its other dimensions to provide a low-profile repair or reinforcement, thereby reducing subsequent damage to the container caused by snagging or catching the patch on external objects. Additionally, the adhesive may bond the patch to the container to reduce separation and withstand loadings imparted to the container.

Abstract: The invention is a process for repairing a coating having a precise thickness damaged in a specific area. In detail, the process includes the steps of: 1) removing the damaged coating from the specific area; 2) placing a scrim material having a thickness equal to the required thickness of the coating in the specific; and 3) filling the specific area with coating material to the thickness of the scrim material.

Abstract: Structure, for sealing, from the outside, a liquid-leaking puncture wound in the wall of a liquid container. This structure includes a patch body having a perimetered cavity selectively securable via a self-torque-limiting bolt to the outside of such a container in a manner whereby the cavity overlies and faces the wound, with the cavity's perimeter surrounding the wound, and a patch pellet contained and confined in the cavity, and formed, at least in part, of a liquid-reaction substance which, with the patch body secured to the container, reacts to contact with liquid leaking from the container at least by imbibing such liquid and swelling to apply wound-sealing pressure, and more preferably by additionally reacting with leakage liquid to form a sticky coagulant mass for aiding in applying sealing pressure to the wound.

Abstract: A drywall repair patch comprises: a mesh sheet which carries a dry, pressure sensitive adhesive layer on at least one side thereof, and at least one layer of a dry, water hardenable cement product carried on a side of the mesh sheet. The mesh sheet is free of any rigid supporting plate. Further by this invention, water is applied to the water hardenable cement, typically after placement on the wall, followed by pushing a portion of the cement layer and mesh sheet into the hole being covered, without substantially breaking the adherence to the wall, to form a concave portion of the patch in the hole. After hardening, a second portion of water hardenable cement material is applied to form a smooth wall surface over the hole and drywall patch.

Abstract: A patch for repairing a hole or a scrape on a perforated or scraped surface has a patching compound of a semi-fluid consistency that is stabilized with a mesh, such that the patching compound and mesh can be applied to a surface in a thin coat and can adhere and dry in a relatively short time. A package encloses the patching compound, and mesh is sized to approximate the package. Although the package can be any shape, one embodiment of the package has a rectangular top and bottom with side and end edges, the edges of one rectangle being connected to the edges of the other rectangle; the package including a packaging material which 1) is malleable permitting the application of pressure to create texture in the patching compound, and 2) retains the moisture of the enclosed patching compound. The package has at least one seal to connect the edges of the package to enclose the patching compound and mesh. Also disclosed are methods for patching and forming textured surfaces.

Abstract: An electrical element can be attached and electrically connected to a substrate by a conductive adhesive material. The conductive adhesive material can electrically connect the electrical element to a terminal or other electrical conductor on the substrate. The conductive adhesive material can be cured by directing a flow of heated gas onto the material or by heating the material through a support structure on which the substrate is located. A non-conductive adhesive material can attach the electrical element to the substrate with a greater adhesive strength than the conductive adhesive. The non-conductive adhesive material can also be cured by directing a flow of heated gas onto the material or by heating the material through the support structure on which the substrate is located. The non-conductive adhesive material can cover the conductive adhesive material.

Abstract: A method of bonding a MEMS device to a substrate to form a MEMS device assembly. A thickness profile of the MEMS device and/or the flatness of the mating surface of the substrate is determined. An adhesive is deposited onto a mating surface of the MEMS device and/or the mating surface of the substrate. The mating surfaces of the MEMS device and substrate are brought together, such that the adhesive can bond the MEMS device to the substrate. The volume of adhesive deposited at particular locations on the mating surface is varied to compensate for local variations in the thickness profile of the MEMS device and/or the flatness of the mating surface of the substrate.

Abstract: A patching system for repairing a screen having a defect in it includes a patch adapted to be positioned on a side of the screen. The patch includes holes having a size approximating a hole of the screen. The patching system additionally includes an adhesive to form a detachably connection with the screen and positioned on the patch.

Abstract: A wall patch includes a body with a lower surface and an upper surface. An adhesive is located on the lower surface to secure the wall patch to a wall surface. The upper surface is ready-to-paint and can also be pre-textured, if desired. A center reinforcement can be a rigid plastic or metal wall patch, or a flexible plastic or fibered paper wall patch, without a textured upper surface. A method for repairing a hole in a wall includes placing a wall patch over the hole and directly painting the upper surface of the wall patch. The method can further include placing a center reinforcement over the hole before applying the wall patch.

Abstract: An inseparable assembly includes a body having a first surface and a second surface. The body includes an oxide-based ceramic matrix composite material having a first predetermined ductility. The assembly further includes a crack extending through the body between the first surface and the second surface, and a patch bonded to at least one of the first surface and the second surface overlapping at least a portion of an edge of the crack. The patch includes a second material having a second predetermined ductility that is greater than the first ductility.

Abstract: A wall patch includes a substantially planar body, an adhesive located on a first surface of the body, a ready-to-paint second surface of the body, and an aperture in the body. The aperture is preferably sized to minimize a wall hole, such as is commonly made for installation of an electrical outlet or other household wall element. A method for repairing a wall hole includes identifying a wall hole to be repaired by covering less than a total hole area defined by the wall hole, said wall hole having a wall element mounted therein; applying over the wall hole a wall patch having a substantially planar body, an adhesive located on a lower surface of the body, a ready-to-paint upper surface of the body, and an aperture in the body having an aperture area less than the wall hole area; wherein the aperture of the wall patch partially covers the wall hole without obstructing access to the wall element; and painting directly over the wall patch.